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4 Point Method / Measurement of low resistancesOhm's Law

Product No: P2410101

Principle

The resistances of various DC conductors are determined by recording the current / voltage characteristic. The resistivity of metal rods and the contact resistance of connecting cords are calculated.

Tasks

To plot the current / voltage characteristics of metal rods (copper and aluminium) and to calculate their resistivity.
To determine the resistance of various connecting cords by plotting their current / voltage characteristics and calculating the contact resistances.

What you can learn about

Ohm's law
Resistivity
Contact resistance
Conductivity
Four-wire method of measurement

Materiallist (Excerpt)	Product	Amount
Universal measuring amplifier	13626-93	1
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V	13505-93	1
Heat conductivity rod, Cu	04518-11	1
Heat conductivity rod, Al	04518-12	1
Digital multimeter 2010	07128-00	2
Connection box	06030-23	1
Connecting cord, 32 A, 2000 mm, yellow	07365-02	2
Connecting cord, 32 A, 750 mm, yellow	07362-02	2
Connecting cord, 32 A, 750 mm, blue	07362-04	1
Connecting cord, 32 A, 500 mm, red	07361-01	2
Connecting cord, 32 A, 500 mm, blue	07361-04	1
Connecting cord, 100 mm, yellow	07359-02	2
Connecting cord, 32 A, 250 mm, red	07360-01	1
Connecting cord, 32 A, 250 mm, blue	07360-04	1
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals	16502-42	1